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Aquatic Rover Goes for a Drive Under the Ice 19 November 2019, by Arielle Samuelson

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Aquatic Rover Goes for a Drive Under the Ice 19 November 2019, by Arielle Samuelson Aquatic rover goes for a drive under the ice 19 November 2019, by Arielle Samuelson that could be six to 12 miles (10 to 19 kilometers) thick. "The ice shells covering these distant oceans serve as a window into the oceans below, and the chemistry of the ice could help feed life within those oceans. Here on Earth, the ice covering our polar oceans serves a similar role, and our team is particularly interested in what is happening where the water meets the ice," said Hand. The Antarctic waters are the closest Earth analog to the seas of an icy moon, which makes them an An underwater rover called BRUIE is being tested in ideal testing ground for BRUIE technology. Three Antarctica to look for life under the ice. Developed by feet (1 meter) long and equipped with two wheels to engineers at NASA-JPL, the robotic submersible could roll along beneath the ice, the buoyant rover can one day explore ice-covered oceans on moons like take images and collect data on the important Europa and Enceladus. BRUIE is pictured here in an region where water and ice meet, what scientists arctic lake near Barrow, Alaska in 2015. Credit: NASA call the "ice-water interface." A little robotic explorer will be rolling into Antarctica this month to perform a gymnastic feat—driving upside down under sea ice. BRUIE, or the Buoyant Rover for Under-Ice Exploration, is being developed for underwater exploration in extraterrestrial, icy waters by engineers at NASA's Jet Propulsion Laboratory in Pasadena, California. It will spend the next month testing its endurance at Australia's Casey research station in Antarctica, in preparation for a mission that could one day search for life in ocean worlds beyond Earth. BRUIE will spend the next month testing its endurance in the icy waters near Casey Station, Antarctica. The rover uses its buoyancy to anchor itself to the ice and roll along There are moons throughout the solar system it upside down on two wheels. Credit: NASA believed to be covered in deep oceans hidden beneath thick, frozen surfaces. Scientists like Kevin Hand, JPL lead scientist on the BRUIE project, believe that these lunar oceans, such as "We've found that life often lives at interfaces, both those on Jupiter's moon Europa and Saturn's the sea bottom and the ice-water interface at the moon Enceladus, may be the best places to look top. Most submersibles have a challenging time for life in our solar system. But first, they'll need a investigating this area, as ocean currents might tough aquatic explorer capable of navigating solo cause them to crash, or they would waste too much through an alien ocean locked under ice sheets power maintaining position," said lead engineer 1 / 3 Andy Klesh. "BRUIE, however, uses buoyancy to remain anchored against the ice and is impervious to most currents. In addition, it can safely power down, turning on only when it needs to take a measurement, so that it can spend months observing the under-ice environment." During several Antarctic field tests, the rover will remain tethered to the surface as Hand, Klesh, mechanical engineer Dan Berisford and University of Western Australia engineer Dan Arthur test its suite of instruments, including its two live, high- definition cameras. "BRUIE will carry several science instruments to measure parameters related to life, such as dissolved oxygen, water salinity, pressure and temperature," said Berisford, who will attach the science instruments if early tests go well. But life on other worlds like Enceladus and Europa may be difficult to measure. "Once we get there," he added, "we only really know how to detect life similar to that on Earth. So it's possible that very different microbes might be difficult to recognize." While the team has previously tested BRUIE in Alaska and the Arctic, this is the rover's first trial in Antarctica. Supported by the Australian Antarctic Program, the crew will travel to lakes and the seashore near Casey station, where they will drill holes in the ice in order to submerge BRUIE. The rover could even make some friends—curious penguins and seals sometimes investigate when the science teams drill through the ice. The team will continue to work on BRUIE until it can survive under the ice for months at a time, remotely navigate without a tether and explore the ocean at greater depths. NASA is already at work constructing the Europa Clipper orbiter, which is scheduled to launch in 2025 to study Jupiter's moon Europa, laying the groundwork for a future mission that could search for life beneath the ice. Provided by NASA APA citation: Aquatic rover goes for a drive under the ice (2019, November 19) retrieved 25 September 2021 from https://phys.org/news/2019-11-aquatic-rover-ice.html 2 / 3 This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only. 3 / 3 Powered by TCPDF (www.tcpdf.org).
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